//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//  * Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//  * Neither the name of NVIDIA CORPORATION nor the names of its
//    contributors may be used to endorse or promote products derived
//    from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.

#include <stdio.h>
#define NOMINMAX
#include <windows.h>
#include "Timing.h"


unsigned long getTime()
{
	return timeGetTime();
}


float getCurrentTime()
{
	unsigned int currentTime = timeGetTime();
	return (float)(currentTime)*0.001f;
}


float getElapsedTime()
{
	static LARGE_INTEGER previousTime;
	static LARGE_INTEGER freq;
	static bool init = false;
	if(!init){
		QueryPerformanceFrequency(&freq);
		QueryPerformanceCounter(&previousTime);
		init=true;
	}
	LARGE_INTEGER currentTime;
	QueryPerformanceCounter(&currentTime);
	unsigned long long elapsedTime = currentTime.QuadPart - previousTime.QuadPart;
	previousTime = currentTime;
	return (float)(elapsedTime)/(freq.QuadPart);
}

